To make Safari the default browser on Mac, iPhone, and iPad, you can follow simple steps. On a Mac, click the Apple icon, then System Settings, and select Safari from the dropdown menu. Alternatively, you can use Spotlight Search by pressing Command + Space to open the search box, typing "default web browser," and selecting Safari. To set Safari as default on an iPhone or iPad, tap Settings, scroll down, tap Safari, then Default Browser App, and finally tap Safari. This ensures a seamless browsing experience across Apple devices, leveraging Safari's speed, privacy features, and deep integration with the Apple ecosystem.